School District of Philadelphia headquarters on North Broad Street. Credit: Wiki Commons.
At noon on Wednesday the School District of Philadelphia announced it would close all schools at 12:15 p.m. due to excessive heat.
All after-school activities are also cancelled, according to the district.
"Schools with graduation ceremony scheduled for today have the option to remain open for the ceremonies. Parents are asked to contact schools directly to confirm graduation schedules," according to a news release.